Fixes issue #2

There's no need to move the project to a group if the user is
creating projects in their own namespace.

with group namespace resolution.
upstream merge request for python-gitlab.

No --create flag.

Added more error checking to scripts.

python-gitlab API has added the ability for public project creation.
This is because of changes in the GitLab 6 API.

I have also added optparse for option parsing so that I can pass
more advanced options and arguments.

I have renamed creatE_gitlab_project.py to manage_gitlab_project.py.